Elettronika S r l TXUD3000A 3000 Watt ATSC Transmitter User Manual Transmitter Part 2
Elettronika S.r.l. 3000 Watt ATSC Transmitter Transmitter Part 2
Contents
- 1. Transmitter User Manual Part 1
- 2. Transmitter User Manual Part 2
- 3. Exciter Manual
Transmitter User Manual Part 2
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| Document ID | 1244141 |
| Application ID | ZtWobplj6jXoktPsyXjz8A== |
| Document Description | Transmitter User Manual Part 2 |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 250.29kB (3128644 bits) |
| Date Submitted | 2010-02-22 00:00:00 |
| Date Available | 2010-06-18 00:00:00 |
| Creation Date | 2009-06-30 16:16:00 |
| Producing Software | Acrobat Distiller 6.0.1 (Windows) |
| Document Lastmod | 2010-01-25 14:54:38 |
| Document Title | TXUD3000ATSC UHF TV TRANSMITTER_Rev0_Date030609.PMD |
| Document Creator | PageMaker 7.0 |
| Document Author: | Userprog03 |
LDMOS UHF SERIES MEDIUM POWER TV AMPLIFIER User’s manual 91 This page is intentionally blank 92 Section 1 - Information Contents: 1.1 Description 1.2 Main Features 1.3 Technical characteristics 1.4 Front panel 1.5 Rear panel Rear connections 93 MEDIUM POWER TV AMPLIFIER SERIES 1.1 DESCRIPTION The amplifier belongs to the Medium Power Amplifier products family of Television Amplifiers fully in solid state LDMOS technology. These TV Amplifiers operate in the UHF Band with Common amplification process (separate amplification available) of the Video and Audio carriers. This Amplifier family has been designed to offer to the customer high performances, high reliability and greater simplicity in its operation and maintenance procedures. The Video and Audio signal processing is provided for all TV Standards and all types of Audio applications (Mono & Dual Sound - NICAM) together with the different colour systems such as PAL - NTSC - SECAM. Thanks to the amplitude and phase and non linearity pre-correction circuit, it is possible to cancel the distortions in the output stage, thus cutting down the operating costs. Due to the common amplification design, the transmitter is easily upgradeable to any digital TV standard: DVB-T, DVB-H, DMB-T, ATSC. It is only necessary to replace the modulator and the RF output band pass filter, all the other components are used without any change. The cooling system is fully contained into the amplifier, and it is based on forced air flow. A powerful and very low acoustic noise blower is used. A front panel air dust filter is available, sized in order to enable easy replacement. The user interface is based on a graphics display, where all the parameters are showed. A detailed log of events and alarm help the maintenance of the system. The unit can be fully controlled in REMOTE mode via PC direct-link or via PSTN, GSM or Ethernet networks by means of Elettronika Remote Control System. The system can be easily upgraded with dual drive option. Besides, the transmitter can be easily integrated in a 1+1 or more complex N+1 redundancy configurations. 1.2 MAIN FEATURES - LDMOS Technology; - Forced-air cooling system; - Analog and Digital input signal; - High efficiency; - Wired and serial remote control (RS232 or RS485); - All voltages and currents available on display; - Output filter included. 94 1.3 TECHNICAL CHARACTERISTICS RF SECTION - Analog Operation Frequency Range ........................................................................................................................................................... UHF Output Power (±0.5dB) ............................................................................................................................................... 1300W Amplification Class .......................................................................................................................................................... AB Gain (±2dB) .................................................................................................................................................................... 28dB Technology ............................................................................................................................................. Solid State LDMOS RF Input Connector ................................................................................................................................................ N Female Impedance ....................................................................................................................................................................... 50Ω RF Output Connector (Amplifier / Rack) ........................................................................................... 7/16” Female / EIA 7/8” Impedance ....................................................................................................................................................................... 50Ω - Digital Operation Frequency Range ........................................................................................................................................................... UHF Digital Output Power (DVB-T) ............................................................................................................................. 300W RMS Digital Output Power (ATSC) ............................................................................................................................... 500W RMS DVB-T Modes ......................................................................................................... All the modes listed in ETSI EN 300 744 DVB-T MER ....................................................................................................................................................... > 33dB RMS DVB-T Shoulders Attenuation (After non-critical mask cavity filter) ................................................................ > 40dB RMS DVB-T Output Spectrum ............................................................................................................. Compliant ETSI EN 300 744 ATSC Symbol Rate ...................................................................................... 10.76MBaud/s (Compliant to ATSC Doc. A/53) ATSC SNR ......................................................................................................................................................... > 27dB RMS ATSC Shoulders Attenuation (After simple mask cavity filter ref. total output power) ..................................... > 46dB RMS ATSC Output Spectrum ......................................................................................................... Compliant to ATSC Doc. A/64 REMOTE CONTROL SECTION Parallel Interface ........................................................................................................................... ON/OFF, Alarms, Interlock Serial Interface ............................................................................................................................. RS232 or RS485 Selectable METERING Output Forward Power (Peak or RMS) Output Reflected Power (Peak or RMS) Unbalance Power Heat sink Temperature Input Power (Peak or RMS) RF Modules Current Power Supply Voltage Working Timer INDICATIONS Cooling Blower Working (With icon on front display) Transmitter Interlock (With icon on front display) Alarm (With red LED on front panel) Transmitter ON/OFF (With green LED on front panel) Remote ON/OFF (With orange LED on front panel) 95 PROTECTIONS Output Forward Power Output Reflected Power Unbalance Power RF Modules Current Power Supply Voltage PROTECTIONS Forward Power (Analogue) ......................................................................................................................................... 1500W Reflected Power (Analogue) ......................................................................................................................................... 150W Forward Power (DVB-T) ................................................................................................................................................ 400W Reflected Power (DVB-T) ............................................................................................................................................... 40W Forward Power (ATSC) ................................................................................................................................................. 600W Reflected Power (ATSC) ................................................................................................................................................ 60W Unbalance (Analogue) .................................................................................................................................................. 300W Unbalance (DVB-T) ....................................................................................................................................................... 100W Unbalance (ATSC) ........................................................................................................................................................ 150W Temperature ................................................................................................................................................................... 75°C IDC ....................................................................................................................................................................................................................................................................................................................... 18A VDC ....................................................................................................................................................................................................................................................................... Min 10V - Max 33.5V GENERAL Power Supply Voltage ............................................................................................................................................. 90 - 260V Power Supply Frequency ........................................................................................................................................ 50 - 60Hz Power Factor ................................................................................................................................................................. > 0.98 Analog Power Consumption (Black) ......................................................................................................................... 3.45kVA Digital Power Consumption (DVB-T) .......................................................................................................................... 2.2kVA Digital Power Consumption (ATSC) ........................................................................................................................... 2.5kVA Housing (Amplifier / Rack) ...................................................................................................................................... 6U / 20U Weight (Amplifier / Rack) ................................................................................................................................... 63kg / 175kg Airflow ............................................................................................................................................ From 330m3/h to 500m3/h Temperature ..................................................................................................................................................... -5°C to +45°C Options - Non critical mask, DVB-T, Output filter - Critical mask, DVB-T, Output filter - Stringent emission mask, ATSC, Output filter AUTV/500LD, 2AUTV/1000LD, 3AUTV/1500LD 96 1.4 FRONT PANEL 1. Function keys 2. LCD Graphic Display 3. Status LEDs 4. RS232 Socket 5. RF Monitor Connector 6. Main Switch RS232 for connection to PC with ERCoS software and for firmware upgrade Pin 2: Pin 3: Pin 5: TX RX GND 97 1.6 REAR PANEL 41 42 43 FUSE FUSE FUSE 1. Breaker 2. AC 220V OUT Socket 3. AC 400V IN Socket 41. FAN 3.15A Fuse 42. CONTROL BOARD 1A Fuse 43. EXCITER 4/8A Fuse 5. RF IN Connector 6. RS485 Socket 7. EXCITER Socket 8. TELEMEASURES Socket 9. RF OUT Connector Wired Telemeasures connector Pin 1: FWD power (Analog out) Pin 2: REF power (Analog out) Pin 3: Temperature (Digital out) Pin 4: Interlock (Digital in) Pin 5: GND Pin 6-7: Free contact (Digital out) Closed when Alarm Pin 8: 0V=ON / 5V=Normal (Digital in) Pin 9: 0V=OFF / 5V=Normal (Digital in) EXCITER for connection to Driver Module Pin 1: Pin 2: GND 0V=Normal / 5V=AGC Alarm (Digital out) 0V=Normal / 5V=AGC Alarm (Digital out) FWD power (Analog out) REF power (Analog out) Pin 3: Pin 8: Pin 9: RS485 for connection to RCU or Amplifier Control Pin 2: Pin 3: Pin 4: 98 RXRX+ +5V Pin 5: Pin 7: Pin 8: GND TXTX+ Section 2 - Installation Contents: 2.1 Operating environment 2.2 First installation 2.3 Connection with VEGA Transmitter 2.4 Stand-alone Amplifier configuration in Dual Drive version 2.5 Slave multi-Amplifier configuration with Amplifier Control 2.6 Stand-alone Amplifier configuration with Elettronika RCU 2.7 Stand-alone Amplifier configuration with direct PC connection 99 2.1 OPERATING ENVIRONMENT You can install the equipment in a standard component rack or on a suitable surface such as a bench or desk. In any case, the area should be as clean and well-ventilated as possible. Do not locate the equipment directly above a hot piece of device. The upper lid can be dismounted to allow an easy internal access. The equipment is designed with a modular design, that is each circuit is realized inside different modules or boards. All interconnections between modules are made by means of connectable cables which allow an easy and quick maintenance of demaged modules. 2.2 FIRST INSTALLATION Correct installation of the equipment is important for maximum performance and reliability. Antenna and earth connections must be installed with the greatest care. The equipment adjustment isn’t need, because the unit is completely adjusted by our technical staff. RF INPUT To ELECTRIC NETWORK AC 400V IN RF IN RS485 AGC TELEMEASURES BREAKER AC 200V OUT To EXCITER To ANTENNA RF OUT 1. Connect Power Supply cable of the Exciter to the Auxiliary Socket on the rear panel of the Amplifier; 2. connect the Power Supply cable of the Amplifier to the electric network (230VAC Monophase or 400VAC Threephase); if present the Isolator Transformer, the Amplifier is provided with cable and plug; 3. connect the RF OUT Exciter cable to the RF IN connector on the rear panel of the Amplifier; 4. connect the Antenna cable to the RF OUT connector on the rear panel of the Amplifier. 100 When the equipment is put within a combined system it is directly connected to the input splitting and output combining systems. Before fully powering the equipment, check that the output connections of the coaxial cable to the antenna system are working. In order to this it is possible to check the indication of the Reflected Power at low power levels. Only if the SWR indication on the display is 0, the output power can be slowly increased. At maximum output power, some watts might be shown as Reflected Power. 2.3 CONNECTION WITH VEGA TV TRANSMITTER TV AMPLIFIER VEGA To ELECTRIC NETWORK AC 400V IN RF IN RS485 AGC TELEMEASURES BREAKER AC 200V OUT To ANTENNA RF OUT 101 2.4 STAND-ALONE AMPLIFIER CONFIGURATION IN DUAL DRIVE VERSION LEFT IN RIGHT IN LEFT MAIN OUT RIGHT MAIN OUT LEFT AUX OUT RIGHT AUX OUT 19kHz OUT VIDEO IN DIRECT REMOTE MAIN IN MAIN OUT AUX IN AUX OUT MAIN CTRL GND RF AUX IN MAIN RF OUT RF MAIN IN AUX CTRL AUX REMOTE RS232/485 AC 400V IN RF IN RS485 AGC TELEMEASURES BREAKER AC 200V OUT To ANTENNA RF OUT 102 2.5 SLAVE MULTI-AMPLIFIER CONFIGURATION WITH AMPLIFIER CONTROL From SPLITTER AMPLIFIER CONTROL AMPLIFIER AC 400V IN RF IN RS485 AGC TELEMEASURES BREAKER AC 200V OUT To COMBINER RF OUT 103 2.6 STAND-ALONE AMPLIFIER CONFIGURATION WITH ELETTRONIKA RCU AC 400V IN RF IN RS485 AGC TELEMEASURES BREAKER AC 200V OUT RF OUT 2.7 STAND-ALONE AMPLIFIER CONFIGURATION WITH DIRECT PC CONNECTION SERIAL PORT 104 Section 3 - Operation Contents: 3.1 Operation 3.2 Display 3.3 Menus 3.4 Firmware upgrade 105 3.1 OPERATION At startup, after initial image, the display shows the main screen with the RF powers as below: The user may turn on and off the amplifier by means of the switch on the front panel. The control board turns on all the power supplies, the exciter (if any), and internal cooling fans. While the amplifier is working, the micro-controller monitors continuously the most important parameters: power supply voltages, absorbed currents, high power zone temperature, forward and reflected powers, unbalances (if any). Each measure is associated to a maximum threshold beyond which the amplifier is immediately put in protection status by turning off one or more power supply, depending on the failed block. In order to prevent a temporary problem to trigger a definitive protection status, the failed block is turned on again, after some seconds, for up to five times. If it goes beyond the protection threshold for more than five times, it is declared as FAILED and it will no longer be turned on. In this case, the amplifier will have to be turned off manually by means of the switch on the front panel, then turned on again after performing the needed maintenance. On the front panel there are also three LEDs labelled ON, REMOTE and ALARM. Their meanings are explained in Table 1. LED COLOUR MEANING MEANING WHEN BLINKING The amplifier has been turned on locally but it has been turned off by remote ON Green The amplifier is on REMOTE Yellow Re mo te c o ntro l i s It never blinks enabled ALARM Red An alarm is present It never blinks Table 1: Meanings of the three LEDs on the front panel Screenshots in this manual are indicative, so they can be different from those on your equipment. 106 3.2 DISPLAY The Control Board is provided with a modern pixels graphic display with blue background. Normally it always shows a title bar (on the top line) and a status bar (on the bottom line). The ‘Title bar’, shows the name of the amplifier (TV Amplifier) and the current time. If the amplifier is a single unit coupled externally with other units in a high power transmitter, the title bar shows the amplifier number (slave address) too. The ‘Status bar’ indicates the forward and reflected powers and the temperature. It also contains two symbols for the interlock (lock) and the alarm (bell). The bell symbol is continuously displayed in case of alarm. It blinks if there has been an alarm which has ended but has not yet been seen by the user. It stops blinking once the Log has been checked. The interlock symbol is displayed only when this function is enabled. It may be either a close lock, when there is no alarm (interlock chain closed) or an open lock in case of alarm (interlock chain open). Since the status bar is always showed on the display, regardless of the screen, the user may monitor at any time the most important parameters and the presence of alarms while moving between different screens. 3.3 MENU The user may see or modify locally some configuration parameters using the four buttons on the front panel. All screens areorganized in a hierarchical menus and the user may move between them in a simple and intuitive way. To see the menu it’s sufficient to press the ESC key. 107 The display only shows three items at a time: all the items can be scrolled by the UP and DOWN arrow keys. Any item can be chosen by selecting it and pressing the RET key. Menu entries with an arrow on the right open sub-menus when chosen. Thus there is a hierarchical structure as below. To go back from a sub-menu to the previous menu, press the ESC key. If the ESC key is pressed in the main menu, the RF powers screen is accessed. Hierarchical menu structure RF Powers This is the main screen showing the RF powers of the amplifier: forward power, reflected power, unbalances, if any. For forward power a level bar is displayed. See an example in Figure 1. Power Supply This screen shows all the signals coming from two power supply. To check the next (previous) power supply press the UP (DOWN) key. For each power supply, the voltage, the absorbed current and the status (ON or OFF) are shown. 108 Log/Alarms The control board is provided with an external EEPROM and a clock. Any alarm or switching event with the time at which it occurred is saved in the EEPROM. The Log/ Alarms sub-menu allows to manage this log. It is possible to see the events stored in the log by selecting Log/Alarms J View Log/ Alarms. All events can be scrolled by pressing the UP and DOWN keys. For example, the event shown in Figure 7 is the turning on of the amplifier by means of the local switch. For every event/alarm a short description and the date and time at which it occurred is displayed. In case of alarm, the value of the measure which caused the alarm is saved into the log. In case of alarm still existing after five turning-on attempts, the parameter is marked as FAILED. The table below is the list of all the events which can be logged. EVENT DESCRIPTION Local ON Amplifier turned on by means of the local switch Local OFF Amplifier turned off by means of the local switch Remote ON Amplifier turned on remotely Remote OFF Amplifier turned off remotely Interlock open Interlock chain open Interlock closed Interlock chain closed Power Supply ON Power supply on Fwd Pwr xxxxW Alarm for forward power Ref Pwr xxxxW Alarm for reflected power UnbY xxxxW Unbalancing alarm V1 xx.xV Power supply voltage alarm I1 xx.xA Power supply current alarm The log may be completely deleted by selecting Log/Alarms J Clear Log/Alarms. Amplifier can store in the log details about alarms and generic events. You can change this behaviour selecting Log/Alarms J Log/Mode menu item. Working Timer The control board has a working timer which is always enabled while the amplifier is 109 working (i. e. there is at least one power supply working). The menu entry Working Timer J View Timer allows to check the hours for which the timer has been enabled. Working Timer J Timer Reset resets the timer. Thresholds This is a screen showing the alarm threshold of each signals monitored by the control board. The list can be scrolled by means of the UP and DOWN keys. RMS/Peak The control board can monitor both the RMS and peak powers, the first used in digital systems. The menu entry Settings JRMS/Peak allows to choose the power to be displayed and monitored. This menu is present only in certain amplifiers. Date/Time This screen allows to set the current date and time. The setting is changed by pressing the arrow keys, then pressing the RET key to move to the following value and eventually save the changes. To go back to the previous menu and discard any change made, press the ESC key. Display The menu entry Settings J Display allows to change some settings of the display, such has back light, contrast and screensaver. The back light and the contrast are set by means of the UP and DOWN arrow keys. The changes made are saved by pressing the RET key or discarded pressing the ESC key. With Settings J Display J Screensaver you can set an interval time after which display backlight is turned off. When display backlight is off, press any key to switch it on. Frequency (only for some Amplifiers) The forward and reflected RF powers is measured by means of a directional coupler. In order to compensate for the effect due to the sampling made by the coupler, it is possible to set the frequency by menu entry Settings J Frequency. The setting can be changed by pressing the arrow keys. The changes made are saved by pressing the RET key or discarded pressing the ESC key. Set the video carrier frequency. Slave Address The amplifier may be used either in stand-alone mode or as a slave of a master in a high power multiple units transmitter. In the latter case an unique address for each amplifier has to be specified, in order for all of them to communicate with the master on the same RS485 bus. The menu entry Settings J Slave Address allows to choose the stand- 110 alone mode or set a slave address by means of the UP and DOWN arrow keys. The changes made are saved by pressing the RET key or discarded pressing the ESC key. Remote The amplifier may be controlled either locally, by means of the keys and display, or remotely. There are three possibilities for remote control: - using a direct serial connection between amplifier RS232 connector and a PC RS232; - using the remote control device manufactured by Elettronika S.r.l. (RCU), on the RS485; - using a general-purpose control system connected to telemeasures. You can enable / disable remote control choosing menu item Settings J Remote. When remote control is enabled, the yellow REMOTE LED on the front panel is lit. Interlock One of the pins of the telemeasure connector, located on the rear panel, is used for the interlock alarm. It is an input line which turns off the amplifier in case of alarm. The interlock check can be enabled or disabled using menu item Settings J Interlock. When it is enabled, the status bar shows the lock symbol, which is close if the interlock chain is closed (no alarm) or open if it is open (alarm). Firmware Release The menu entry Settings J Firmware Release allows to display the firmware version number and the hardware release of the amplifier. Serial Number The menu entry Settings J Serial Number allows to display the serial number of the apparatus. 111 3.4 FIRMWARE UPGRADE The microcontroller is provided with a built-in Flash memory containing the firmware. The firmware can be updated with a later version without removing the apparatus from the rack and/or replacing the chip. To upgrade it, connect a PC to the RS232 socket on the front panel of the apparatus by means of a cable DB9 male - DB9 female (pin-to-pin). Launch on the PC the EKAFlash application, select the serial port in use on the PC, choose the update file by pressing the “...” key and click on Download button. Eventually, turn off the amplifier from the main switch and then turn it on again. The upgrade of the firmware begins on the EKAFlash window. The figure below shows this window while a firmware is being updated. The EKAFlash window while updating a firmware 112 Section 4 - Diagram Contents: - APT144 AUTV/1500LD Cable diagrams - APT144C_APT144CM AUTV/1500LD Component list - APT144DM_APT144DM/DIG AUTV/1500LD Component list - Modules description 113 COM V+ V- T1 T2 T3 S1 S2 S3 R1 R2 R3 J7 COM Im V+ V- SP500-27/48 SWITCHING POWER SUPPLY COM Im V+ V- SP500-27/48 SWITCHING POWER SUPPLY J6 COM Im V+ V- SP500-27/48 SWITCHING POWER SUPPLY COM Im V+ V- SP500-27/48 SWITCHING POWER SUPPLY J2 9 10 U3 J3 J3 9 10 V+ V- SP500-27/48 SWITCHING POWER SUPPLY Im J4 SCH0288A INTERFACE BOARD J1 J6 Vm J5 J6 9 10 V+ V- SP500-27/48 SWITCHING POWER SUPPLY J8 COM POWER SUPPLY #3 Im TP10 L (EQUIPOTENTIAL) POWER SUPPLY #2 R.C. J1 J12 J2 J7 9 10 J8 POWER SUPPLY #4 R.C. COM V+ V- SP500-27/48 SWITCHING POWER SUPPLY Vm POWER SUPPLY #1 Im RF MONITOR COM J11 J3 FAN J2 FAN J1 EXCITER PN1114A FANS CABLE BOARD RS485 J10 J9 J8 TELEMEASURES SCH0223A CONTROL BOARD AND DISPLAY U10 U10 U5 TP9 TP8 TP7 TP6 TP5 TP4 TP3 TP2 TP1 TEMP +5V U6 J3 U2 U9 HANDLE ACTUATOR SW. Im SP500-27/48 SWITCHING POWER SUPPLY Vm Vm R.C. T1 N8 R.C. T2 N7 Vm Vm R.C. T3 N6 R.C. S1 N5 Vm Vm R.C. S2 N4 R.C. S3 N3 U19 U1 U11 U19 N91 N91 U11 J19 U21 R1 N2 FAN GND +24V J14 J15 MAIN SWITCH N0 N1 N2 N3 N4 N5 N6 N7 N8 N9 N10 R33 N0 AUXILIARY SOCKET SCH0265A MAINS DISTRIBUTION BOARD 5A R33 U21 R31 N11 R3 R32 1A N10 U9 R2 N1 J21 SCH0221A AMPLIFIER INTRFACE BOARD N (EQUIPOTENTIAL) U14 U14 3.15A R31 J2 J1 TEMP N9 114 +5V U4 U7 U8 TP5 TP4 400VAC 1 = NC TP9 5=T 4=S 3=R 2=N TP10 T1 T2 T3 S1 S2 S3 R1 R2 R3 Im V+ V- COM Im V+ V- SP500-27/48 SWITCHING POWER SUPPLY COM Im V+ V- SP500-27/48 SWITCHING POWER SUPPLY J6 COM Im V+ V- SP500-27/48 SWITCHING POWER SUPPLY COM Im V+ V- SP500-27/48 SWITCHING POWER SUPPLY J3 J3 9 10 V+ V- SP500-27/48 SWITCHING POWER SUPPLY Im J4 J5 J6 9 10 V+ V- SP500-27/48 SWITCHING POWER SUPPLY J8 POWER SUPPLY #3 Vm TP8 TP7 TP6 TP3 TP2 HANDLE ACTUATOR SW. COM SP500-27/48 SWITCHING POWER SUPPLY J7 J2 9 10 COM SCH0288A INTERFACE BOARD J1 J6 POWER SUPPLY #2 Im J1 COM POWER SUPPLY #1 R.C. RF MONITOR J12 J2 J7 9 10 J8 POWER SUPPLY #4 R.C. COM V+ V- SP500-27/48 SWITCHING POWER SUPPLY Vm U5 TEMP +5V U6 J3 U3 U19 Im TP1 U19 U2 J11 J3 FAN J2 FAN J1 EXCITER PN1114A FANS CABLE BOARD RS485 J10 J9 J8 TELEMEASURES SCH0223A CONTROL BOARD AND DISPLAY U11 Vm Vm R.C. T1 N8 R.C. T2 N7 Vm Vm R.C. T3 N6 R.C. S1 N5 Vm Vm R.C. S2 N4 R.C. U9 J19 S3 N3 N91 U11 U21 U1 U10 U10 R1 N2 FAN GND +24V J14 J15 MAIN SWITCH N0 N1 N2 N3 N4 N5 N6 N7 N8 N9 N10 R33 N0 AUXILIARY SOCKET SCH0265A MAINS DISTRIBUTION BOARD 5A R33 U21 R31 N11 R3 R32 1A N10 U9 R2 N1 J21 SCH0221A AMPLIFIER INTRFACE BOARD N (EQUIPOTENTIAL) U14 U14 N91 R31 J2 J1 3.15A TEMP N9 +5V 115 U4 U7 U8 Component list APT144C_APT144CM Elettronika Code Description Qty 00664 01041 02228 02502 02695 02699 02700 02830 02876 02877 02893 02894 05064 05553B 07515C 07524A 07541 07605C 07605D 07605F 07925 08503 09419 CON0245 CON0249 CON0276 CON0277 CON0280 C0205 DET0516 DET0575 DET0772 DET0798 DET0996 DET1022 DET1054I DET1185 E0012 FUS1A FUS3A FUS5A MTF0070CR0 PAN0074 PN1114A R0012 LM35DT THERMAL SENSOR 1nF 50V CERAMIC CAPACITOR N FEMALE CONNECTOR SMA SOCKET FOR RG58 DB9 CONNECTOR FOR IU008059 CABLE FEMALE 10WIRE CONNECTOR FEMALE 16WIRE CONNECTOR 10A GREEN PLUG 5 POLES 16A ILME AC SOCKET 5 POLES 16A ILME SOCKET PANEL MOUNTING 3 WAY MALE EXTRACTABLE TERMINAL BLOCK 3 WAY FEMALE EXTRACTABLE TERMINAL BLOCK FERRITE 5-6U HANDLE KIT 4x16A AUTOMATIC SWITCH SWITCH 10A FUSE-HOLDER PANEL MOUNTING FAN 1.5uF 400V CAPACITOR GRID FAN PVC PROTECTION RG 303 50W TEFLON CABLE PN419/A PRINTED CIRCUIT BOARD CON0245R1 MECHANICAL DETAIL CON0249R0 MECHANICAL DETAIL CON0276R3 MECHANICAL DETAIL CON0277R3 MECHANICAL DETAIL CON0280R2 MECHANICAL DETAIL MULTIPOLES WIRE DET0516R0 MECHANICAL DETAIL DET0575R1 MECHANICAL DETAIL DET0772R0 MECHANICAL DETAIL DET0798R0 MECHANICAL DETAIL DET0996R0 MECHANICAL DETAIL DET1022R0 MECHANICAL DETAIL DET1054R1 MECHANICAL DETAIL DET1185R1 MECHANICAL DETAIL SP-500-27 DE2 SWITCHING POWER SUPPLY 1A FUSE 3.15A FUSE 5A FUSE LDMOS UHF AMPLIFIER MODULE PAN0074AR2 FRONT PANEL PN1114AR1 PRINTED CIRCUIT BOARD 18mm DIAMETER WHEEL 1.20 3.00 116 Page 1/2 (APT144CM) (APT144CM) (APT144CM) (APT144CM) (APT144CM) (APT144CM) (APT144C) Elettronika Code Description Qty SCH0223AR1 SCH0265AR0 SCH0288AR1 V0760 V0962 Z0021 Z0081 Z0673 CONTROL BOARD AND DISPLAY MAINS DISTRIBUTION BOARD POWER SUPPLY INTERFACE BOARD BLACK PLASTIC TAP TERMINAL BLOCK MECHANICAL DETAIL MECHANICAL DETAIL COVER Page 2/2 (APT144CM) (APT144CM) 117 Component list APT144DM_APT144DM/DIG Elettronika Code Description Qty 02029 02410 02450 02458 02502 02791 02871 06674 06676A 07595 07595A 07595B 07596 08504 08515C APT144CM CMS6006 CSS5011 DET0434 DET0536 DET0564 DET0565 DET1028 DET1051 DET1069 PAN0080 PAN0081 PAN0082 R0159 Z0114 Z0500 UG909 CONNECTOR FOR RG 58 CABLE 7/16” CONNECTOR FOR 1/2” CABLE EIA 7/8” CONNECTOR FOR 1/2” CABLE EIA 7/8” INNER SMA SOCKET FOR RG58 CABLE DB9 MALE SOCKET PANEL MOUNTING DB9 SHELL UHF ATV BANDPASS FILTER UHF DTV BANDPASS FILTER FAN 6uF CAPACITOR GRID GRID RG 58 50Ω CABLE 1/2” CABLE AUTV/1500LD LDMOS UHF TV AMPLIFIER 1m 1/2” CABLE FOR 7/16” MALE CONNECTOR 1.5m RG 58 CABLE FOR N - N MALE CONNECTOR DET0434R2 MECHANICAL DETAIL DET0536R3 MECHANICAL DETAIL DET0564R0 MECHANICAL DETAIL DET0565R0 MECHANICAL DETAIL DET1028R0 MECHANICAL DETAIL DET1051R0 MECHANICAL DETAIL DET1069R0 MECHANICAL DETAIL PAN0080R0 1U FRONT PANEL PAN0081R0 2U FRONT PANEL PAN0082R0 3U FRONT PANEL 20U RACK MECHANICAL DETAIL MECHANICAL DETAIL 1.00 1.00 118 (APT144DM) 2 (APT144DM/DIG) (APT144DM) 2 (APT144DM/DIG) (APT144DM) (APT144DM/DIG) (APT144DM) (APT144DM/DIG) (APT144DM) (APT144DM) (APT144DM) (APT144DM) 2 (APT144DM/DIG) (APT144DM) 2 (APT144DM/DIG) CONTROL BOARD SCH0223AR1 DESCRIPTION The Control Board SCH0223A manages the operational logic of the amplifier: switching on and off, power supply and fans, alarms and protections, remote control, human-machine interface. All of that is performed by a modern and powerful 16 bit micro-controller, which is the main part of the board. Figure 1: Simplified block diagram of the control and display board 119 It can be seen that the micro-controller is the heart of the control system, to which the various peripherals (power supply, serial ports, telemeasure socket, AGC port, RF amplifier module, ROM, clock, display and keys) are interfaced. - Power Supply The board is powered with a continuous +24V voltage applied on the J14 connector. From that the +5V voltage, powering the most of the chips (micro-controller, operational amplifiers, display, etc.) is derived by means of a switching converter (see IC19). A +12Vdc voltage is obtained from it as well, by means of a linear conversion provided by the integrated circuit IC8. From this, a -12Vdc voltage is obtained by means of the integrated circuit IC5. The -12V voltage is used to adjust the contrast of the display. - Connectors On the board SCH0223A there are several connectors used as interfaces for the peripherals of the apparatus and the ports for external communication. POWER SUPPLY The connectors J1, J6, J8 e J12 are used to connect the power supply powering the RF modules. The number of power supply used changes depending on the amplifier, up to eight power supply. They are connected in the order shown in Table 1 below. Remaining connectors, if any, are left unconnected. CONNECTOR POWER SUPPLY N° J1 1-2 J6 3-4 J8 5-6 J12 7-8 Table 1: Interface connectors for the power supply Through this connection, each power supply provides the level of voltage and current acquired by the microcontroller by means of an internal ADC. Besides the connectors allow the control board to turn on or off the individual power supply (for instance when an alarm occurs). RF AMPLIFICATION The J3 connector interfaces the control board with the RF amplification section. Through this connector the 120 micro-controller acquires the forward and reflected powers, unbalancing (if any), and temperature of the critic amplification area. It also allows to inhibit the transistors in case of reflected power alarm, by means of a totally hardware, thus extremely fast protection. Depending on the apparatus, this connector may also allow to enable or disable the cooling fans of the critic area. RS485 The J11 connector (10 pin socket) is directly wired to a DB9 female connector placed on the rear panel of the apparatus. This communication bus allows to connect the amplifier to the control (Amplifier Control) module of a high-power transmitter composed by several individual amplifiers. In this case, each amplifier and the Amplifier Control are connected to the same 4-wires RS485 bus and each of them has a unique address (which can be set by means of the keys and the display) for correct communication. In case of single (stand-alone) amplifier, the RS485 connector can be used to interface to the Remote Control Unit (RCU) made by Elettronika S.r.l. This unit allows to monitor and control the remote transmitter from any site provided with PSTN or GSM1 phone connection. Table 2 shows the wiring between the J11 connector on the board and the DB9 female connector on the rear panel, along with the description of the lines. PIN N° ON DB9 PIN N° ON J11 DESCRIPTION Not used Rx- Rx+ +5V GND Not used Tx- Tx+ Not used Table 2: Description of the RS485 connector For more details about the control system contact the distributor or the manufacturer. 121 TELEMEASURES The J9 telemeasure connector (10 pins socket) is directly wired on a DB9 female connector placed on the rear panel. There are input and output digital lines (TTL level) and analog output lines on this connector, which are used to monitor and control the amplifier by means of a general-purpose remote control system. The correspondence between the pins of the J9 connector on the board and the DB9 female connector on the rear panel, as well as the meaning of the various lines, is shown in table 3 below (the directions are in respect to the micro-controller on the board). PIN N° ON DB9 PIN N° ON J9 TYPE DIRECTION Analog Output Forward power (*) Analog Output Reflected power (*) Analog Output Temperature Digital Input 6-7 2-4 Digital Output Digital Input Turning-on control (normally high, active when low) Digital Input Turning-off control (normally high, active when low) DESCRIPTION Interlock: 0V = Interlock Alarm 5V = Normal Ground Free Contact (closed when amplifier is in alarm) (*) You can select by means of two jumpers on the board (JP1 and JP2) RMS or peak power. If there are two jumpers on pins 1 and 2 of JP1 and JP2 connectors, RMS power is selected. Otherwise, if there are two jumpers on pins 2 and 3 of the same connectors, peak power is selected. Table 3: Description of the telemeasures connector The input stage of the digital pins has an internal pull-up towards the 5V power supply voltage. To use these lines it only takes setting a switch to close to earth. When closed, the relevant control (turning on or off) is enabled and the switch may be open again (impulse controls). The interlock pin may be used as protection so that the amplifier is switched off when the digital input level is low. It is possible to use several serially connected switches to make an interlock chain. Usually all switches are closed and the interlock level is low, thus the amplifier is on. If even only one of the switches is open, the 122 level of the interlock signal becomes high (this line has a pull-up towards the +5V power supply voltage as well) and the interlock protection activates switching off the amplifier. Note that in case the interlock protection is not used, the pin 4 of the DB9 telemeasure connector and the earth pin (pin 5) must be short circuited. Otherwise it is possible to disable the monitoring of the interlock chain from menu (see user manual). Figure 2 shows a typical usage for the digital input signals to turn on and off the amplifier and for the interlock alarm. Figure 2: Usage of the digital input signals of the telemeasures connector AGC / EXCITER The connector called J10, as the telemeasures connector and the RS485 bus, is wired to a DB9 female connector placed on the rear panel of the amplifier. This connector allow the implementation of an automatic gain control between an exciter and the amplifier. A voltage signal related to the forward output power supplied by the amplifier is provided through two pins of the AGC connector. Connecting one of these to the relevant input pin of the exciter, this can pursuit a given voltage level, so that the output power is always constant. In order to avoid that, in case of an alarm decreasing the forward power, the exciter increases its output level due to the AGC, thus damaging the amplification stages, the connector is provided with two digital output lines called AGC Alarm. Under alarm conditions, this lines are brought by the micro-controller at a low level, so that the exciter can stop the AGC. Table 4 shows the connection between the J10 connector on the board and the DB9 connector on the rear panel, along with the description of each pin (the direction of the pin is referred to the position of the microcontroller on the board). 123 PIN N° ON DB9 PIN N° ON J10 TYPE DIRECTION Digital Output AGC Alarm 0V = Alarm 5V = Normal Digital Output AGC Alarm 0V = Alarm 5V = Normal Not used Not used Not used Nout used Analog Output Forward power Analog Output Forward power DESCRIPTION Ground Table 4: Description of the AGC connector RS232 The DB9 female connector on the front panel is an external communication RS232 serial port, through which a PC can be connected directly to the amplifier in order to perform operations such as the remote control (by means of an adequate software2) and the update of the microcontroller firmware. The used communication protocol is asynchronous, at a 19200bps speed, 1 start bit, 8 data bits, 1 stop bit, no parity. No hardware flow control is used. The connector is DCE type and the pin used are shown in Table 5. PIN N° ON DB9 DESCRIPTION TxD RxD GND Table 5: Description of the RS232 connector MISCELLANEOUS The J2 (called AUX), J4, J5 and J17 connectors are not used and are there only for future updates. The SW1 dip-switches are partially used for the configuration of the correct mode for the micro-controller. The other switches are not used. It is important that the position of the dip-switches is left unchanged, because changing it may set a wrong mode for the micro-controller, affecting the work of the whole amplifier. For more information about this application contact the distributor of the manufacturer. 124 SCH0223AR1 Top layer Component layout 125 SCH0223AR1 Bottom layer Component layout 126 SCH0223AR1 COMPONENT LIST Part Name/Number Description Qty. Comps. Page 1/2 BATT BH001RB 3093_90 CC 100nF-S 01065C 03093 03090 BATTERY HOLDER 01065C Y5V 1206 CAPACITOR 46 CC 15pF-S 01088 CC 1nF-S 01096 CC 1uF100V-S 01760A 01088 SMD 1206 CAPACITOR 01096 SMD 1206 CAPACITOR 01760A 1206 50V CAPACITOR 11 CC 47pF-S 01100 CE 100uF25V-S 01793B CE 10uF16V-S CE 10uF35V-S 01778A CE 1uF35V-S 01613A CE 220uF50V LOW ESR CE 22uF16V-S CE 47uF35V-S 01790A D 1N4148-S 03002 D 50WQ06FN D BAS85-S D BAT54S DIS MGLS12864T DL KA-3528SGC 03057 DL LEDG5 03060 DL LEDR5 03061 DL LEDY5 03054B IC 24LC64 04815 IC 78M12 4307B IC CD4051BM-S IC LM2596S-5.0 IC LM358M-S 04660 IC LM393-S 04639 IC LMC6482-S IC LMC6484-S IC M41T56 04611 IC MAX232-S 04804B IC MAX3080-S 04770 IC MAX942CSA-S IC MB90F543PF IC MPC100-450DI-TO IC TC7662BCOA 04758A IC ULN2003A 4870 IND 2u2H-S 05020A IND MS85 10uH-S 01100 SMD 1206 CAPACITOR 01793B ELET. SMD CAPACITOR 2 01626B TANT. ELET. SMD CAP. 2 01778A ELET. SMD CAPACITOR 2 01613A TANT. ELET. SMD CAP. 5 01799A ELET. SMD CAPACITOR 4 01780A ELET. SMD CAPACITOR 4 01790A ELET. SMD CAPACITOR 1 03002 SMD DIODE 03019A SMD DIODE SCHOT. 5.5A 1 03024 SMD DIODE SCHOTTKY 2 03199 SMD SCHOTTKY DIODE 19 03083A 128x64 DOT 03057 GREEN SMD LED DIODE 7 03060 GREEN LED DIODE 5mm 03061 RED LED DIODE 5mm 03054B YELLOW LED DIODE 5mm 1 04815 SMD INTEG CIRCUIT 04307B SMD VOLTAGE REGUL. 1 04615 SMD INTEG CIRCUIT 04580 SMD INTEG CIRCUIT 04660 SMD INTEG CIRCUIT 04639 SMD INTEG CIRCUIT 04632 SMD INTEG CIRCUIT 04634 SMD INTEG CIRCUIT 04611 SMD INTEG CIRCUIT 04804B SMD INTEG CIRCUIT 04770 SMD INTEG CIRCUIT 04572 SMD INTEG CIRCUIT 04596 SMD INTEG CIRCUIT 04608 INTEG CIRCUIT 04758A SMD INTEG CIRCUIT 04870 SMD INTEG CIRCUIT 05020A INDUCTOR 04948 2.7A INDUCTOR BATT1 C2, C7-10, C12, C16, C19, C21-27, C29, C31, C33, C37-40, C44-46, C49, C58-61, C63, C65, C66-69, C74, C76, C78-81, C83-84, C87, C90 C13-15, C17 C3-6, C50-51, C53 C1, C18, C28, C36, C43, C54, C62, C73, C77, C88-89 C42, C52 C11, C47 C56-57 C20, C32 C70-72, C75, C82 C55, C64, C85-86 C34-35, C41, C48 C30 D1-2, D5-9 D23 D14-15 D3-4, D10-13, D16-22, D24-29 DIS1 DL2, DL5-10 DL1 DL4 DL3 IC17 IC8 IC7, IC14, IC23 IC19 IC3 IC2 IC24 IC1, IC4, IC6, IC9, IC13, IC18, IC25 IC20 IC21 IC22 IC10 IC11 IC16 IC5 IC12, IC15 L1 L2 127 Part Name/Number Description IND T100uH-1.8A 4958 J CON HD515V/05-4PVE J DB9_F-0° LT J FC-10P 02697-02699 J FC-16P 02701-02700 J PAN2 02739 J PAN2 02739-40-41 J PAN8 02716 JU JUMP2 02739-02742 JU JUMP3 02707-02742 R 100K-1%-S 00065B R 100R-1%-S 00029D 04958 TOROIDAL-STORAGE 02881+02882 PANDUIT PCB CON. 1 02794 PCB CONNECTOR DB9 02697+02699 PCB CONNECTOR 8 02701+02700 PCB CONNECTOR 1 02739 PCB CONNECTOR 02739+02740+02741 PCB CONNEC. 1 02716 PCB CONNECTOR 02739+02742 PAN2 MALE 02707+02742 PAN3 MALE 00065B RES 1/4W 1% SMD 1206 16 00029D RES 1/4W 1% SMD 1206 12 R 10K-1%-S 00053B 00053B RES 1/4W 1% SMD 1206 24 R 10R-S 00017A R 1206 N. M. R 1K0-1%-S 00041B R 22K-1%-S 00057B R 2K2-1%-S 00045B R 330K-1%-S 00071D R 330K-S 00071A R 470K-S 00073A 00017A RES 1/4W 5% SMD 1206 N. M. RES 1/4W 5% SMD 1206 00041B RES 1/4W 1% SMD 1206 00057B RES 1/4W 1% SMD 1206 00045B RES 1/4W 1% SMD 1206 00071D RES 1/4W 1% SMD 1206 00071A RES 1/4W 5% SMD 1206 00073A RES 1/4W 5% SMD 1206 11 11 R 470R-1%-S 00037B R 4K7-1%-S 00049B R 68K-1%-S 00063B R 820R-S 00040A R 8K2-1%-S 00052B RL 30.22.24 07569 RV 1M-3266X SW SWITCH-8DIP T 06086 N 7630 7632 TR BC848 03457 TR BC856 03455 XTAL 32.768k-S 05146 XTAL 4MHz-S 05101A 00037B RES 1/4W 1% SMD 1206 00049B RES 1/4W 1% SMD 1206 00063B RES 1/4W 1% SMD 1206 00040A RES 1/4W 5% SMD 1206 00052B RES 1/4W 1% SMD 1206 07569 RELE 00815 VARIABLE RESISTOR 07530A PCB DIP SWITCH SMD 7630 7632 KTI06086 2 WAY KEY 03457 NPN SMD TRANSISTOR 03455 PNP SMD TRANSISTOR 05146 QUARTZ 05101A QUARTZ 128 Qty. Comps. Page 2/2 L3 J14 J13 J1-2, J6, J8-12 J3 J5, J7 J15 J4 JP3 JP1-2 R33-34, R62-63, R78-79, R94-101, R106-107 R24, R47, R58, R71, R75, R81, R83, R89, R103-105, R113 R7, R10, R12, R14-16, R22, R25, R27, R30, R36, R38, R51, R64, R84-85, R87-88, R92, R93, R108-111 R68 R91 R17, R54, R59-60, R76-77, R86, R90 R9, R21, R26, R28-29, R37, R45, R48-50, R69 R52, R55, R61 R66 R65 R8, R23, R40, R42, R46, R57, R70, R74, R80, R102, R112 R11, R13, R39, R53, R56, R67 R18, R31, R43 R19-20, R32, R44 R35, R72-73, R82, R114-116 R41 RLY1-3 R1-6 SW1 T1-4 TR1-2 TR3-4 XTAL2 XTAL1 MAINS DISTRIBUTION BOARD SCH0265AR0 SCH0265AR0 Component layout SCH0265AR0 COMPONENT LIST Part Name/Number Description Qty. Comps. CC 2nF2 2kV 01045A CNV AC-DC ATC-12S D 1N4148 03001 DL LEDG3 03053 J CON HD515V/05-4PVE J CON HD515V/05-5PVE R 2K7 0046 RL 40.31.24 01045A CERAMIC CAPACITOR E0037 AC DC CONVERTER 03001 DIODE 03053 GREEN LED DIODE 3mm 02881+02882 PANDUIT PCB CON. 02895+02896 PANDUIT PCB CON. 0046 RES 1/4W 5% 7567C RELE C1-2 CNV1 D1-2 DL1 J2 J1 R1 RLY1-2 129 POWER SUPPLY INTERFACE BOARD SCH0288AR1 SCH0288AR1 Component layout SCH0288AR1 COMPONENT LIST Part Name/Number Description Qty. Comps. CC 1nF-S 01096 DZ 5V1-S 03128 J FC-10P 02697-02699 J FC-10P PCB FEMALE R 0R0-S 00001 01096 SMD 1206 CAPACITOR 03128 SMD ZENER DIODE 02697+02699 PCB CONNECTOR 02706 PCB FEM. CONNECTOR 00001 RES 1/4W 5% SMD 1206 16 16 R 100K-1%-S 00065B R 1206 N. M. 00065B RES 1/4W 1% SMD 1206 N. M. RES 1/4W 5% SMD 1206 16 R 8K2-1%-S 00052B RV 3266W N. M. 00052B RES 1/4W 1% SMD 1206 N. M. VARIABLE RESISTOR 16 TR BC847 03456 03456 NPN SMD TRANSISTOR C1-16 DZ1-8 J2-3, J6-7 J1, J4-5, J8 R1, R8, R12, R15, R21, R23, R26, R28, R33, R40, R44, R47, R53, R55, R58, R60 R3, R6, R17, R32, R35, R38, R49, R64 R2, R10, R14, R16, R19, R24, R29-30, R34, R42, R46, R48, R51, R56, R61-62 R4-5, R18, R31, R36-37, R50, R63 R7, R9, R11, R13, R20, R22, R25, R27, R39, R41, R43, R45, R52, R54, R57, R59 TR1-8 130 LDMOS UHF AMPLIFIER MODULE MTF0070CR0 DESCRIPTION The MTF0070C is the RF Amplifier module of the AUTV/1500LD based on LDMOS technology. The RF Amplifier module is composed by eight broadband amplifier boards (SCH0192A) coupled together by means of Wilkinson combiners, driven by means another amplifier board. The module also includes the cooling heatsink and a small Interface board (SCH0221A) which forwards power supply to the two stages, groups the power and temperature into a single connector, more easily managed inside the transmitter. The driver stage of the amplifier module is provided with a Gate control to inhibit the output power. TECHNICAL CHARACTERISTICS Frequency Range Output Power Gain Driver Stage Quiescent Current (cold) Amplifier Stage Quiescent Current (cold) RF Input Impedance RF Output Connector / Impedance 470 - 860MHz 1300W 23dB (±2) 4A (2A for each transistor to 32V) 2A (1A for each transistor to 32V) 50Ω 7/16” Female / 50Ω MTF0070CR0 COMPONENT LIST Elettronika Code Description Qty 00001 00221B 01041D 01400 01408 02402 02512 03017 03207 08502 08527 PN0998A PN1091A SCH0192AR0 SCH0221AR0 SCH0248AR0 SCH0249AR0 SCH0250AR0 SCH0251AR0 SCH0252AR0 0Ω 1206 SMD RESISTOR 75Ω 1206 SMD RESISTOR 1nF 1206 SMD CERAMIC CAPACITOR BYPASSING CAPACITOR BYPASSING CAPACITOR 7/16” FEMALE CONNECTOR SMA SOCKT PANEL MOUNTING MBR3045PT DIODE HSMS2802 DIODE RG 316 50Ω CABLE HF-85 ENDIFORM CABLE PN0998AR1 BIAS ADDER PCB PN1091AR3 UHF DIRECTIONAL COUPLER PCB 200W LDMOS UHF AMPLIFIER MODULE AMPLIFIER INTERFACE BOARD 8 INPUTS WILKINSON PCB 4 WAY WILKINSON PCB 4 WAY WILKINSON PCB 2 WAY WILKINSON PCB UHF INPUT COUPLER 13 3.00 0.20 131 RF INPUT MONITOR FWD RF IN GATE DRIVER (SCH0192A) RF OUT 4 WAY WILKINSON DIVIDER 4 WAY WILKINSON DIVIDER 132 GATE GATE RF OUT 8 SCH0192A RF IN 8 REF FWD SCH0223A CONTROL BOARD TEMP SCH0221A INTERFACE BOARD RF OUT 7 SCH0192A RF OUT 5 SCH0192A RF IN 5 RF IN 7 RF OUT 4 SCH0192A RF IN 4 RF OUT 6 RF OUT 3 SCH0192A RF IN 3 SCH0192A RF OUT 2 SCH0192A RF IN 2 RF IN 6 RF OUT 1 SCH0192A RF IN 1 FWD REF TEMP LCD DISPLAY TEMPERATURE SENSOR 8 WAY WILKINSON COMBINER 2 WAY WILKINSON DIVIDER RS485 SOCKET TLM SOCKET AGC SOCKET RS232 SOCKET To AMPLIFIER CONTROL REF FWD RF OUTPUT PN1091A DIRECTIONAL COUPLER T13 RF T6 SCH0192A RF AMPLIFIER BOARD #6 T7 SCH0192A RF AMPLIFIER BOARD #7 T8 SCH0192A RF AMPLIFIER BOARD #8 32-1037 FLORIDA RF 32-1037 FLORIDA SCH0192A RF AMPLIFIER BOARD #5 FLORIDA PN1010A HSMS2802 1nF PN1089A T5 FLORIDA RF 32-1037 32-1037 T4 RF SCH0192A RF AMPLIFIER BOARD #4 32-1037 T3 RF SCH0192A RF AMPLIFIER BOARD #3 FLORIDA T2 RF SCH0192A RF AMPLIFIER BOARD #2 32-1037 T1 FLORIDA SCH0192A RF AMPLIFIER BOARD #1 T12 T15 82Ω FLORIDA RF PN1083A 32-1123 T99 SCH0192A DRIVER MODULE FWD REF J12 TP3 TP4 TP5 TP6 TP7 T88 T8 T77 T7 T66 T6 T55 T5 T44 T4 T3 T33 T88 T22 TP2 TP8 GATE UNB1 UNB2 J13 J14 J16 J15 T16 T15 T14 SCH0221A AMPLIFIER INTERFACE BOARD T13 T66 T77 TP1 T12 T55 T14 T14 T2 T11 T1 T44 T33 T22 T11 T99 133 LDMOS AMPLIFIER MODULE SCH0192AR0 DESCRIPTION The RF module is an integrated TV linear amplifier designed for UHF band, this module employs push-pull LDMOS technology in order to achieve very good efficiency, high linearity and reliability. LDMOS transistors operate in AB class. It is a wideband amplifier over the full frequency, no adjustment is required for the channel change. The board includes RF section amplifier, bias circuit, protection circuit and matching networks. A silver plated copper plate is brazed with PCB in order to obtain low thermal resistance. Providing a minimum of 200W Pk sync linear power, this module is the perfect amplifier for any broadband UHF power transmitter. TECHNICAL CHARACTERISTICS Frequency Range Output Power Gain Output LDMOS Power Supply Output LDMOS Bias Current @ +32V Vdd RF Input Impedance RF Output Impedance 470 - 860MHz 200W PEP 14dB (±1) 32V (±2%) 1A 50Ω 50Ω Curve response graphic Middle frequency 660MHz, span 500MHz, 2dB/div., reference to the arrow 134 CALIBRATION PROCEDURE - Technical characteristics Power supply voltage 32V (± 2%) Polarisation current 1.0 cold for each device (2A total), ± 0.1A Gain for low signal Not less than 13dB in the 470-860MHz band (± 1dB) Compare to the typical curve eclosed - Adjustment procedure Polarisation current calibration 32V stabilised power supply 10A amperometer Gain curve Network analyser - Adjustment points description R7-R8 (Trimmers) Adjust the current absorbed in stand-by (1.0A per device) - Calibration steps Ω dummy load and STEP 1: Close the input and the output of the module by connecting them to a 50Ω connect the spectrum analyser through a directive sample, in order to look for self-oscillation of the module, if any (anyway the module has been designed so that it would not self-oscillate even if totally de-coupled, without any input or output load). STEP 2: Check the voltages of the polarisation circuits without assembling the transistors first: connect the 32V power supply to the proper turret by means of a fastening screw, then give power and check data: - the stabilised voltage on the zener diodes DZ1 and DZ2 is about 15V compared to the ground; - the stabilised voltage on the zener diodes DZ3 and DZ4 is about 6.8V compared to the ground; - the voltage on the pads to which the gates of the LDMOS transistors will be soldered (R23 and R24 resistors side) changes from 0V to a maximum value of about 6V when moving the relevant trimmer (R7-R8). STEP 3: Check the work of the protections. - Set both trimmers so that there is a value of about 4.5V on the pads of the gates; - solder some wire to the pad between the two LEDs, next to the serigraphy of the input hybrid H1; - in order to check the work of the protections aboard, a power of about 4V has to be supplied to the wire, for example by touching with it the reophore of C23 or C24 which is not connected to ground; the two red LEDs will immediately light up and the two RF transistors will be switched off at the same time: the polarisation current (2A) will decrease to 0 and of course the gain curve displayed by the spectrum analyser will decrease; - after this it is important to restore the position of the two trimmers for the minimum voltage! Then disconnect the 32V power supply. 135 Solder a wire STEP 4: Fastening of the LDMOS transistors: after properly cleaning the plate surface, smear a thin layer of silicone fat on the lower side of the flange of the MOSFETs, fasten them to the heat sink and solder the gate first, then the drain. Solder the two 13pF (ATC) chip capacitors and above them the two 1-5pF capacitive trimmers, between the two pair of gates, as shown by the mounting plan. STEP 5: Connect serially a c.c. amperometer to the power supply, with scale starting from more than 5A (i.e. 10A). STEP 6: Power the module and check the MOSFET is not absorbing current; this means that the device is integral and working correctly. STEP 7: Slowly turn the R7 trimmer until the MOSFET absorbs 1A, always checking that there are no self-oscillation; under this conditions it is possible to check by means of a digital tester that the voltage on the gate is about 5.2-5.4V. STEP 8: Repeat the previous step for the other section of the module, this time turnign R8 and checking that the indication of the current on the amperometer increases to 2A total (which includes the current of the other device left on). STEP 9: Check the response curve of the module by means of the network analyser. STEP 10: Check the response curve for low signal with centre 660MHz and span 500MHz, 2dB/div. STEP 11: The curve should be similar to the one enclosed, with a tolerance of ± 0.5dB. To obtain this, act on the four trimmers C41-C41a and C42-C42a with the proper “calibrator”, inorder to flatten the curve as much as possible, especially at the edged of the band which represents the minimum values. STEP 12: Finally, check that the current in stand-by does not increase by more than 15÷20%, reaching at worst 2.3÷2.4A when the heat sink is hot and not ventilated. Note: when mounting-removing the PALLET on the heat sink, tightly fasten the screw of each all “N” input and output connectors. These are mounted with a single 3mm screw and if it is not properly fastened it may be detached from the PCB by a movement of the connector once it has already been soldered to the path. 136 SCH0192AR0 LDMOS UHF Amplifier Board Component layout 137 SCH0192AR0 COMPONENT LIST Elettronika Code Description Manufacturer, Mfr. Code 00045A 00042A 00800 00056B 00075A 00001 00432 00049A 00012A 00396 01807B 01795 01145 01065H 01135 01065G 01613A 2K2 1206 5% 1/4W RESISTOR 1K2 1206 1% 1/4W RESISTOR 50K 3.8" SQUARE TRIMMER 18K 1206 5% 1/4W RESISTOR 680K 1206 5% 1/4W RESISTOR 0R 1206 RESISTOR 50 OHM 60W TERMINATION 4K7 1206 1% 1/4W RESISTOR 3R9 1206 5% 1/4W RESISTOR 1K0 2512 5% 1W RESISTOR 470uF 50V ELECTROLITIC CAPACITOR 100uF PTH 50V ELET. VERT. CAPACIT. 1nF 50V PORCELAIN CAPACITOR 100nF 2220 1kV CERAMIC CAPACITOR 100pF 500V PORCELAIN CAPACITOR 100nF 1210 250V CAPACITOR 1uF SMD 35V TANTALUM CAPACITOR 01626A 01123 01104 01143 01108 01117 01104B 01119A 01113 01160 01485 04034 00661 04583 03135 03137 03056 07684 DET0643K 01111 V0774 10uF SMD 16V TANT. CAPACITOR 20pF 500V PORCELAIN CAPACITOR 1.3pF 500V PORCELAIN CAPACITOR 470pF 200V PORCELAIN CAPACITOR 4.7pF 500V PORCELAIN CAPACITOR 10pF 500V PORCELAIN CAPACITOR 3.6pF 500V PORCELAIN CAPACITOR 13pF 500V PORCELAIN CAPACITOR 8.2pF 500V PORCELAIN CAPACITOR 0.3pF 500V PORCELAIN CAPACITOR VARIABLE CAPACITOR 1-5pF LDMOS TRANSISTOR BLF861 NTC THERMISTOR 100K IC SPDT ANALOG SWITCH DIODE 15V ZENER DIODE 6.8V ZENER LED RED SMD SILVERED WIRE 1.2MM 200W LDMOS PALLET 6.8pF 500V PORCELAIN CAPACITOR SPACER 3X10 F/F 08491 08492 01109 01077A PRE-FOLDED CABLE PRE-FOLDEDCABLE 5.6pF 500V PORCELAIN CAPACITOR 1uF PTH 100VPOLYESTER CAPACITOR PHICOMP, RC1206JR072K2L PHICOMP, RC1206FR071K2L 4 BOURNS, 3296W-1-503 PHICOMP, RC1206JR0718KL PHICOMP, RC1206JR07680KL 1 PHICOMP, RC1206JR070RL DICONEX, 17-0185 PHICOMP, RC1206FR074K7L 2 PHICOMP, RC1206JR073R9L TYCO, 35201K0JT ADIMPEX, CL514750 ADIMPEX, CL211050 ATC, ATC100B102JT50XT SYFER, 2220J1K00104KXT ATC, ATC100B101KT500XT SYFER, 1210J2500104KXT NIC COMPONENTS CORP., NTC-T105M35TRB KEMET, KEMT491C106K016AT 2 ATC, ATC100B200JT500XT ATC, ATC100B1R3DT500XT ATC, ATC100B471KW200X ATC, ATC100B4R7DT500XT ATC, ATC100B100JT500XT ATC, ATC100B3R6DT500XT ATC, ATC100B130KT500XT ATC, ATC100B8R2JT500XT ATC, ATC100B0R3CT500XT JOHANSON, 9702-1 PHILIPS, BLF861/A VISHAY, 238164063104 MAXIM, DG419DY-E3 FAIRCHILD, MMSZ5245B DIOTEC, GSEZMM6.8/D2 KINGBRIGHT, KA3528EC ELETTRONIKA, 07684 0.25 ELETTRONIKA, DET0643K ATC, ATC100B6R8KT500XT ELEKTROZUBEHOR, DD10H305010 EZ FORM CABLE, EZ9025 EZFORMCABLE,EZ3425SILVER 2 ATC, ATC100B5R6DT500XT ARCOTRONICS,R82EC4100DQ70J2 138 Qty Comps. R1-4 R5-6, R9-10 R7-8 R11-12 R13 R14 R25-26 R17-18 R19-22 R23-24 C1-3 C4-5 C6-7, C25-28 C8-9 C10-11 C12-14, C21-24 C15-16 C19-20 C29-32 C33-34 C35-38 C57-58 C55-56 C43-44 C49-50 C51-54 C60 C41-42 T1-2 NTC1-2 IC1-2 DZ1-2 DZ3-4 DL1-2 L1-2 C45-48 B1-2 B3-4 C39-40 C61-62 AMPLIFIER INTERFACE BOARD SCH0221AR0 SCH0221AR0 Component layout SCH0221AR0 COMPONENT LIST Part Name/Number Description Qty. CC 100nFAVX 01065A CE 100uF100V CE 100uF50V 01795 CE 10uF35V-S 01778A D 1N4007 03009 D 6CWQ10FN IC LM317HV J FC-16P 02701-02700 J SCREWCONN2 02853 J SCREWCONN3 02860 J TESTP1.3mm 07913 JU JUMP2 02739-02742 JU JUMP3 02707-02742 R 0R33-1W-S R 100K-S 00065A R 220R-S 00033A R 22K-S 00057A R 270R-S 00034A R 4K7-S 00049A TR BC856 03455 01065A CERAMIC CAPACITOR 4 01795B ELET. CAPACITOR 01795 ELET. CAPACITOR 01778A ELET. SMD CAPACITOR 2 03009 DIODE 03026 2x3.5A SMD DIODE SCHOT. 3 04340A INTEG CIRCUIT 02701+02700 PCB CONNECTOR 1 02853 PCB SCREW CONNECTOR 2 02860 PCB SCREW CONNECTOR 1 07913 TEST POINT 17 02739+02742 PAN2 MALE 02707+02742 PAN3 MALE 00380 RES 1W 5% SMD 2512 00065A RES 1/4W 5% SMD 1206 1 00033A RES 1/4W 5% SMD 1206 1 00057A RES 1/4W 5% SMD 1206 1 00034A RES 1/4W5% SMD 1206 1 00049A RES 1/4W 5% SMD 1206 1 03455 PNP SMD TRANSISTOR Comps. C1, C3, C6, C8 C2 C7 C4-5 D4 D1-3 IC1-2 J21 J11, J19 J20 J1-10, J12-18 JP1-2, JP4 JP3 R1-2 R7 R4 R5 R3 R6 TR1 139 SP500-27/48 DE2 SWITCHING POWER SUPPLY E0012 - E0013 MAIN FEATURES - Universal AC input / Full range - Built-in active PFC function, PF>0.95 - Protections: Short circuit / Over load / Over voltage / Over temp. - Forced air cooling by built-in DC fan - Built-in cooling Fan ON-OFF control - Built-in remote sense function - Fixed switching frequency at 110kHz MECHANICAL SPECIFICATION 170 120 150 2-M3 L=16mm max. 50 2-M3 L=4mm max. (AC ) FG NC NC R.C.G. R.C. E 18 3 22 3 L E V EL5 INPUT 100-240VAC 7A 50/60Hz +S SP-500-24 +24V 20A -V -S +VADJ. 9.5 140 10 11 12 13 PIN N° ASSIGNMENT PIN N° ASSIGNMENT AC/L R.C. AC/N +S 14 15 11.5 FG 9 ~ 11 DC OUTPUT +V 4, 5 NC 12 ~ 14 DC OUTPUT -V R.C.G. 15 -S 93 11.5 TECHNICAL CHARACTERISTICS MODEL SP500-27 SP500-48 DC VOLTAGE 27V 48V RATED CURRENT 18A 10A CURRENT RANGE 0 ~ 18A 0 ~ 10A RATED POWER 486W 480W RIPPLE & NOISE (max.) Note 2 200mVp-p 300mVp-p OUTPUT INPUT VOLTAGE ADJ. RANGE 24 ~ 30V 41 ~ 56V VOLTAGE TOLERANCE Note 3 ± 1.0% ± 1.0% LINE REGULATION ± 0.5% ± 0.5% LOAD REGULATION ± 0.5% ± 0.5% SETUP, RISE, HOLD TIME 1500ms, 50ms, 20ms at full load VOLTAGE RANGE 88 ~ 264VAC FREQUENCY RANGE 47 ~ 63Hz POWER FACTOR PF>0.95/230VAC EFFICIENCY (Typ.) 86.5% AC CURRENT 7A/115VAC INRUSH CURRENT (Max.) 18A/115VAC LEAKAGE CURRENT 124 ~ 370VDC PF>0.95/115VAC at full load 87% 3.5/230VAC 36A/230VAC <3.5A/240VAC 105 ~ 135% rated output power OVER LOAD Protection type: Fold back current limiting, recovers automatically after fault condition is removed PROTECTION 31 ~ 36.5V 57.6 ~ 67.2V OVER VOLTAGE Protection type: Hiccup mode, recovers automatically after fault condition is removed FUNCTION ENVIRONMENT SAFETY & EMC (Note 4) OTHERS FAN CONTROL O.T.P. RTH1 or RTH2 >= 50°C FAN ON, <= 45°C FAN OFF, >= 70°C output shutdown REMOTE CONTROL RC+/RC-: Short = power on; Open = power off WORKING TEMP. -10 ~ +50°C (Refer to output load derating curve) WORKING HUMIDITY 20 ~ 90% RH non-condensing STORAGE TEMP., HUMIDITY -20 ~ +85°C, 10 ~ 95% RH TEMP. COEFFICIENT ± 0.03%/°C (0 ~ 50°C) VIBRATION 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes SAFETY STANDARDS UL1950, TUV EN60950 Approved WITHSTAND VOLTAGE I/P-O/P:3KVAC ISOLATION RESISTANCE I/P-O/P, I/P-FG, O/P-GD:100M Ohms/500VDC EMI CONDUCTION & RADIATION Compliance to EN55022 (CISPR22) Class B HARMONIC CURRENT Compliance to EN61000-3-2,-3 I/P-FG:1.5KVAC O/P-FG:0.5KVAC EMS IMMUNITY Compliance to EN61000-4-2,3,4,5,6,8,11; ENV50204, Light industry level, criteria A MTBF 133.4K hrs min. DIMENSION 170*120*93mm (L*W*H) PACKING 1.9kg; 8pcs/15.2kg/1.06CUFT MIL-HDBK-217F (25°C) 141
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